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<FONT color="green">001</FONT>    <a name="line.1"></a>
<FONT color="green">002</FONT>    /*<a name="line.2"></a>
<FONT color="green">003</FONT>     * Copyright (C) 2011 Archie L. Cobbs. All rights reserved.<a name="line.3"></a>
<FONT color="green">004</FONT>     *<a name="line.4"></a>
<FONT color="green">005</FONT>     * $Id: BigFatLockHeldAdvice.html 89 2011-04-25 18:41:56Z archie.cobbs $<a name="line.5"></a>
<FONT color="green">006</FONT>     */<a name="line.6"></a>
<FONT color="green">007</FONT>    <a name="line.7"></a>
<FONT color="green">008</FONT>    package org.dellroad.stuff.servlet;<a name="line.8"></a>
<FONT color="green">009</FONT>    <a name="line.9"></a>
<FONT color="green">010</FONT>    import java.lang.reflect.Method;<a name="line.10"></a>
<FONT color="green">011</FONT>    <a name="line.11"></a>
<FONT color="green">012</FONT>    import org.springframework.aop.aspectj.AspectInstanceFactory;<a name="line.12"></a>
<FONT color="green">013</FONT>    import org.springframework.aop.aspectj.AspectJExpressionPointcut;<a name="line.13"></a>
<FONT color="green">014</FONT>    import org.springframework.aop.aspectj.AspectJMethodBeforeAdvice;<a name="line.14"></a>
<FONT color="green">015</FONT>    <a name="line.15"></a>
<FONT color="green">016</FONT>    /**<a name="line.16"></a>
<FONT color="green">017</FONT>     * AspectJ method "before advice" that verifies that the {@link BigFatLock} is held.<a name="line.17"></a>
<FONT color="green">018</FONT>     */<a name="line.18"></a>
<FONT color="green">019</FONT>    public class BigFatLockHeldAdvice extends AspectJMethodBeforeAdvice {<a name="line.19"></a>
<FONT color="green">020</FONT>    <a name="line.20"></a>
<FONT color="green">021</FONT>        /**<a name="line.21"></a>
<FONT color="green">022</FONT>         * Constructor.<a name="line.22"></a>
<FONT color="green">023</FONT>         */<a name="line.23"></a>
<FONT color="green">024</FONT>        public BigFatLockHeldAdvice(Method aspectJBeforeAdviceMethod, AspectJExpressionPointcut pointcut, AspectInstanceFactory aif) {<a name="line.24"></a>
<FONT color="green">025</FONT>            super(aspectJBeforeAdviceMethod, pointcut, aif);<a name="line.25"></a>
<FONT color="green">026</FONT>        }<a name="line.26"></a>
<FONT color="green">027</FONT>    <a name="line.27"></a>
<FONT color="green">028</FONT>        /**<a name="line.28"></a>
<FONT color="green">029</FONT>         * Verifies the {@link BigFatLock} is held. If not, {@link #lockNotHeld} is invoked.<a name="line.29"></a>
<FONT color="green">030</FONT>         */<a name="line.30"></a>
<FONT color="green">031</FONT>        @Override<a name="line.31"></a>
<FONT color="green">032</FONT>        public void before(Method method, Object[] args, Object target) {<a name="line.32"></a>
<FONT color="green">033</FONT>            if (!BigFatLock.isLockHeld())<a name="line.33"></a>
<FONT color="green">034</FONT>                this.lockNotHeld();<a name="line.34"></a>
<FONT color="green">035</FONT>        }<a name="line.35"></a>
<FONT color="green">036</FONT>    <a name="line.36"></a>
<FONT color="green">037</FONT>        /**<a name="line.37"></a>
<FONT color="green">038</FONT>         * Invoked in cases where the current thread does not hold the {@link BigFatLock}.<a name="line.38"></a>
<FONT color="green">039</FONT>         *<a name="line.39"></a>
<FONT color="green">040</FONT>         * &lt;p&gt;<a name="line.40"></a>
<FONT color="green">041</FONT>         * The implementation in {@link BigFatLockHeldAdvice} throws a {@link BigFatLockNotHeldException}.<a name="line.41"></a>
<FONT color="green">042</FONT>         * Subclasses can override to suit.<a name="line.42"></a>
<FONT color="green">043</FONT>         */<a name="line.43"></a>
<FONT color="green">044</FONT>        protected void lockNotHeld() {<a name="line.44"></a>
<FONT color="green">045</FONT>            throw new BigFatLockNotHeldException();<a name="line.45"></a>
<FONT color="green">046</FONT>        }<a name="line.46"></a>
<FONT color="green">047</FONT>    }<a name="line.47"></a>
<FONT color="green">048</FONT>    <a name="line.48"></a>




























































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